The 'ABT640 bus transceivers are designed for asynchronous communication between data buses. These devices transmit inverted data from the A bus to the B bus or from the B bus to the A bus, depending on the level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated.
To ensure the high-impedance state during power up or power down, OEshould be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN54ABT640 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT640 is characterized for operation from -40°C to 85°C.
State-of-the-Art EPIC-IIBTM BiCMOS DesignSignificantly Reduces Power Dissipation
ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015;Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
Typical VOLP (Output Ground Bounce) < 1 V atVCC = 5 V, TA = 25°C
High-Drive Outputs (-32-mA IOH, 64-mAIOL)
Package Options Include Plastic Small-Outline (DW), ShrinkSmall-Outline (DB), and Thin Shrink Small-Outline (PW) Packages,Ceramic Chip Carriers (FK), and Plastic (N) and Ceramic (J) DIPs